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Dyella ginsengisoli sp. nov., isolated from soil of a ginseng field in South Korea

Hae-Min Jung¹, Leonid N. Ten², Kyoung-Ho Kim^1,, Dong Shan An¹, Wan-Taek Im¹ and Sung-Taik Lee¹

¹ Department of Biological Sciences, Korea Advanced Institute of Science and Technology, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea
² Department of Biology and Medicinal Science, Pai Chai University, 14 Yeonja-1-Gil, Seo-Gu, Daejeon 302-735, Republic of Korea

Correspondence
Wan-Taek Im
wandra{at}kaist.ac.kr
Sung-Taik Lee
e_stlee{at}kaist.ac.kr

A Gram-negative, aerobic, yellow-pigmented, non-spore-forming, motile, rod-shaped bacterium, designated strain Gsoil 3046^T, was isolated from soil from a ginseng field in Pocheon Province, South Korea, and was characterized taxonomically by using a polyphasic approach. A comparative analysis of 16S rRNA gene sequences revealed that strain Gsoil 3046^T belongs to the family Xanthomonadaceae in the Gammaproteobacteria. The greatest sequence similarity was found with respect to Dyella koreensis KCTC 12359^T (97.7 %), Dyella japonica IAM 15069^T (97.4 %), Frateuria aurantia DSM 6220^T (96.7 %), Fulvimonas soli LMG 19981^T (96.2 %) and Luteibacter rhizovicinus DSM 16549^T (96.0 %). The phylogenetic distances from other recognized species within the family Xanthomonadaceae, including Dyella yeojuensis KACC 11405^T, were greater than 4.0 % (i.e. the sequence similarities were less than 96.0 %). DNA–DNA hybridization experiments showed that the levels of DNA–DNA relatedness between strain Gsoil 3046^T and its phylogenetically closest neighbours were below 25 %. The G+C content of the genomic DNA was 66.6 mol%. In addition, the presence of ubiquinone Q-8 as the predominant respiratory quinone, iso-C_{17 : 1}9c, iso-C_{16 : 0}, iso-C_{15 : 0} and iso-C_{17 : 0} as the major cellular fatty acids and iso-C_{13 : 0} 3-OH and iso-C_{11 : 0} 3-OH as the major hydroxy fatty acids supported the affiliation of strain Gsoil 3046^T to the genus Dyella. On the basis of its phenotypic properties and phylogenetic distinctiveness, strain Gsoil 3046^T represents a novel species in the genus Dyella, for which the name Dyella ginsengisoli sp. nov. is proposed. The type strain is Gsoil 3046^T (=KCTC 12599^T=DSM 18387^T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain Gsoil 3046^T is AB245367.

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